Merge topic 'cmake-E-autogen-crash'

132c40a cmake: Validate -E cmake_autogen argument count (#14545)
cc52b7d Merge branch 'cmake-E-automoc-crash' into cmake-E-autogen-crash
9ef66f2 cmake: Validate -E cmake_automoc argument count (#14545)

Source/cmcmd.cxx

@@ -632,7 +632,7 @@ int cmcmd::ExecuteCMakeCommand(std::vector<std::string>& args)
       {
       return cmcmd::ExecuteEchoColor(args);
       }
-    else if (args[1] == "cmake_autogen")
+    else if (args[1] == "cmake_autogen" && args.size() >= 4)
       {
         cmQtAutoGenerators autogen;
         const char *config = args[3].empty() ? 0 : args[3].c_str();